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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_BUFFER_H_
#define WEBKIT_GLUE_PLUGINS_PEPPER_BUFFER_H_
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "webkit/glue/plugins/pepper_resource.h"
struct PPB_Buffer_Dev;
namespace pepper {
class PluginInstance;
class Buffer : public Resource {
public:
explicit Buffer(PluginModule* module);
virtual ~Buffer();
int size() const { return size_; }
unsigned char* mapped_buffer() { return mem_buffer_.get(); }
// Returns true if this buffer is mapped. False means that the buffer is
// either invalid or not mapped.
bool is_mapped() const { return !!mem_buffer_.get(); }
// Returns a pointer to the interface implementing PPB_Buffer that is
// exposed to the plugin.
static const PPB_Buffer_Dev* GetInterface();
// Resource overrides.
Buffer* AsBuffer() { return this; }
// PPB_Buffer implementation.
bool Init(int size);
void Describe(int* size_in_bytes) const;
void* Map();
void Unmap();
// Swaps the guts of this buffer with another.
void Swap(Buffer* other);
private:
int size_;
scoped_array<unsigned char> mem_buffer_;
DISALLOW_COPY_AND_ASSIGN(Buffer);
};
} // namespace pepper
#endif // WEBKIT_GLUE_PLUGINS_PEPPER_BUFFER_H_
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